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Electron microscopy of Ludox colloidal silica
Kolloid-Zeitschrift, 1960The samples of Ludox colloidal silica, previously studied by light scattering, were examined in electron microscope. A considerable aggregation of particles was noted in solutions. The aggregates were efficiently removed by centrifugation, as was previously indicated by the decrease in dissymmetry of light scattered by the same sols.
Deželić, Gjuro +3 more
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Journal of Applied Polymer Science, 2012
AbstractAqueous spherical colloidal silica (CS) particles with a diameter of 15 ± 5 nm were modified with three different types of monofunctional silane coupling agents to prepare functionalized colloidal silica (FCS) particles. The effects of the surface chemistry of the FCS were studied as a function of the CS/FCS loading in the poly(dimethyl ...
Sumi Dinkar +2 more
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AbstractAqueous spherical colloidal silica (CS) particles with a diameter of 15 ± 5 nm were modified with three different types of monofunctional silane coupling agents to prepare functionalized colloidal silica (FCS) particles. The effects of the surface chemistry of the FCS were studied as a function of the CS/FCS loading in the poly(dimethyl ...
Sumi Dinkar +2 more
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Effect of colloidal silica dispersions on the properties of PDMS‐colloidal silica composites
Journal of Applied Polymer Science, 2012AbstractPolydimethylsiloxane (PDMS) colloidal silica composites prepared with the use of the dispersion of colloidal silica (CS) of similar particle size and distribution in different mediums/solvents are investigated for their rheological, thermal, and mechanical properties.
Dinkar Sumi +3 more
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Dense silica-based coatings prepared from colloidal silica
Surface and Coatings Technology, 2005Abstract Two sets of silica-based coatings have been prepared using two different wet methods. Set A was obtained using the conventional sol–gel method from thetraethyl-orthosilicate (TEOS) as the main precursor. Set B was produced from commercial colloidal silica added with two structural modifiers, KOH and sodium metasilicate (Na 2 SiO 3 5H 2 O ...
J.A. Calderón-Guillén +4 more
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Surface modification of colloidal silica
Langmuir, 1990Les particules colloidales monodispersees de silice avec des diametres de 50 a 700 nm sont preparees par hydrolyse de tetraethyl orthosilicate dans l'eau, l'ammoniac et l'ethanol.
Rickey D. Badley +3 more
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Porous silica via colloidal crystallization
Nature, 1997Microstructured porous silicas have potential applications in catalysis, separations, coatings, microelectronics and electro-optics, but methods for producing materials with uniform submicrometre pores have not been available. We have now developed a method in which modified colloidal crystals are used as templates for silica polymerization.
O. D. Velev +3 more
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1996
Publisher Summary Silicas and silicates are the most abundant solid materials on the earth. Various forms of natural and synthetic colloidal silicas have numerous applications. In this chapter, the term, “colloid” is used for the gaseous and liquid dispersions and/or their aggregates of silica particles, the diameter of which ranges from about 10-5 ...
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Publisher Summary Silicas and silicates are the most abundant solid materials on the earth. Various forms of natural and synthetic colloidal silicas have numerous applications. In this chapter, the term, “colloid” is used for the gaseous and liquid dispersions and/or their aggregates of silica particles, the diameter of which ranges from about 10-5 ...
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Adsorption of Colloidal Silica on Alumina and of Colloidal Alumina on Silica
Journal of the American Ceramic Society, 1964The mutual adsorption of colloidal silica on alumina and of colloidal alumina on silica and silicate materials occurs in aqueous suspension at about pH 4. It is shown that the adsorption of colloidal particles on the surface of opposite charge is limited to essentially a monoparticle layer.
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Light scattering of colloidal silica
Journal of Colloid Science, 1959Abstract The absence of absorption in colloidal silica was demonstrated by varying the solvent refractive index of a set of solutions of the same silica concentration and by showing that the excess turbidity and scattering go to zero concomitantly. A spectrophotometer with a 50-cm. cell was used.
Byrg E Bonnelycke, W.B Dandliker
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